Heat Pump Payback in Centralia, IL
Is a heat pump worth it in Centralia?
Centralia is a place where a heat pump genuinely costs more to operate than the alternative. Swap a failed furnace and AC for a heat pump rather than buying like-for-like, and the extra cost here runs $5,500. The heat pump would cost about $113 more a year to run than the furnace it replaces, a premium with no payback. That's Centralia's own climate and rates talking, not a hedge or a caveat.
Checking a different city
This runs the same numbers for 3206 US cities, not just Centralia. Look one up here.
Centralia's weather, in the numbers that matter
3812 heating degree days pile up here every year, so Centralia has a real but manageable winter; the cooling side runs to 1356 cooling degree days, where summers are hot enough that cooling matters as much as heating. Sizing runs off the design temperature, not the average day: 1.4°F here (coldest 2024 reading -2.2°F), which works out to a seasonal COP of 2.73 for the cold-climate class of unit this climate calls for. Centralia needs the cold-climate class of unit: past a 25°F design temperature a standard heat pump falls back on resistance backup often enough to eat the savings. Climate figures trace to the nearest NOAA station, Centralia Municipal Airport, 1.8 miles from Centralia.
Centralia's running-cost comparison, in dollars
Electricity use for heating alone comes out to about 3,536 kWh a year on the 2000-square-foot reference house; folding in cooling puts the electric bill near $894 a year. That compares with roughly 40 Mcf a year of gas at Centralia's $11.25 per-Mcf rate, about $782 a year with the old AC included, against a local electricity rate of 19.06¢/kWh. Because the heat pump costs more to run here, the gap only widens with time: $7,190 behind after 15 years compared with replacing the furnace and AC like-for-like.
What would change Centralia's answer
For the verdict in Centralia to flip, electricity would need to drop to about 15.2¢/kWh from 19.06¢, or gas climb past $14.09 per Mcf from $11.25. A utility offering a lower heat pump rate can change this. Until then, no quote price makes a heat pump pay back against gas in Centralia; the case for one here rests on comfort, cooling, or replacing electric heat instead.
If your home heats with electric baseboard instead of gas
Gas isn't universal in Centralia, many houses run on electric heat already. Swap the comparison to resistance heat instead of gas, and Centralia's answer improves. The saving here runs about $1,280 a year, which recovers the extra $10,000 spent going electric in roughly 7.8 years.
How Centralia compares nationally
Among 3206 cities, Centralia's winter puts it at rank 1638 for severity, while its size puts it at rank 2845 for population, 1 in both cases being the extreme. That's the middle third for winter severity among the cities covered here.
What to do with this number in Centralia
Centralia, Illinois is home to about 11,787 people, and the figures above are the same ones a local HVAC contractor uses to size and quote a system, this site doesn't guess where a real quote would land, it just tells you whether it's worth asking for one. In Centralia, nothing is lost by holding off until the current equipment genuinely fails.
Ask a local HVAC contractor for a quote before committing either way.
Where Centralia's figure comes from
Every constant behind this page, the 2.73 seasonal COP, the degree-day corrections, the equipment costs, is documented in the methodology guide. Centralia's 1.4°F design temperature falls on the cold side of the 25°F cutoff the cold-climate unit guide walks through.